Awk — sum a column

Sum the 3rd column of a space-delimited text file

awk '{sum += $3} END {print sum}' file.txt
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linux133 commands
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linux

More linux commands

  • Sed — replace in file
    sed -i 's/old-string/new-string/g' file.txt

    In-place global string replacement

  • Sort and deduplicate
    sort file.txt | uniq -c | sort -rn | head -20

    Count and rank duplicate lines in a file

  • List block devices
    lsblk -o NAME,SIZE,TYPE,FSTYPE,MOUNTPOINT,UUID

    Tree of disks, partitions, loop devices with filesystem info

  • Show block device UUIDs
    blkid

    Print UUID, LABEL, and FSTYPE for all block devices

  • Mount a partition
    mount -t ext4 /dev/sdb1 /mnt/data

    Mount ext4 partition to /mnt/data

all 133 linux commands